Merge

CSV Merge

Stack, side-by-side, or key-join two CSVs.

Runs in your browser — data never leaves your device

Merge two CSVs: stack, side-by-side, or key join.

KeyHeader

join(inner): 2 rows · key=id

id,name,b_city
1,Alice,Tokyo
2,Bob,Osaka

About CSV Merge

Stack, side-by-side, or key-join two CSVs. Everything runs in your browser.

Free?

Yes.

Uploaded?

No.